From cb96cd832c0703ae747bad36079d96d7c4f147ab Mon Sep 17 00:00:00 2001 From: Bdale Garbee Date: Fri, 16 Oct 2020 11:46:40 -0600 Subject: [PATCH] document 2 flights at Kloudbuster October Fun Fly --- rockets/research/2019-test-6.mdwn | 5 ++++- rockets/research/2020-test-2.mdwn | 16 ++++++++++++++++ rockets/research/2020-test-3.mdwn | 16 ++++++++++++++++ 3 files changed, 36 insertions(+), 1 deletion(-) create mode 100755 rockets/research/2020-test-2.mdwn create mode 100755 rockets/research/2020-test-3.mdwn diff --git a/rockets/research/2019-test-6.mdwn b/rockets/research/2019-test-6.mdwn index a27072f..831e89a 100755 --- a/rockets/research/2019-test-6.mdwn +++ b/rockets/research/2019-test-6.mdwn @@ -17,7 +17,10 @@ closure were lightly greased, and the liner exterior was heavily greased. ## Results ## -Test stand data in 2019-05-25-serial-3634-flight-0030-5.eeprom. +Test stand data in 2019-05-26-serial-3634-flight-0030-5.eeprom. + +About a 2.5 second burn. Sadly, we only got pressure and not load cell data, +so no real characterization. No liner burn-through, no discernable throat erosion, nozzle end o-rings were fairly cooked but no evidence of blow-by. diff --git a/rockets/research/2020-test-2.mdwn b/rockets/research/2020-test-2.mdwn new file mode 100755 index 0000000..ed94d17 --- /dev/null +++ b/rockets/research/2020-test-2.mdwn @@ -0,0 +1,16 @@ +# Test 2020-2 # + +4 grain 54mm Everclear motor with pyrodex pellet ignition in 3-inch test +mule flown on 10 October 2020 at October Fun Fly in Argonia, KS. + +Used 4-grain 54mm Brazell case, #32 (0.5" throat) Loki-style nozzle, forward +closure had pressure sensor and EasyMotor protototype mounted. Three grains +with 0.5" cores (I think!), nozzle end grain bored out to 0.75" core. + +Burnsim called this a 21% K-788, with about 1.97 sec burn time, and max +pressure on a somewhat progressive burn of 923.6 psi. + +## Results ## + +Perfect flight, no damage. However, due to firmware issues, the EasyMotor +failed to launch detect and so we got no motor data recorded on this flight. diff --git a/rockets/research/2020-test-3.mdwn b/rockets/research/2020-test-3.mdwn new file mode 100755 index 0000000..4b148ac --- /dev/null +++ b/rockets/research/2020-test-3.mdwn @@ -0,0 +1,16 @@ +# Test 2020-3 # + +4 grain 54mm Purple Pig motor with Aerotech igniter in 3-inch test +mule flown on 11 October 2020 at October Fun Fly in Argonia, KS. + +Used 4-grain 54mm Kosdon case, Loki-style nozzle with about an 0.390" throat, +forward closure had pressure sensor and EasyMotor protototype mounted. +Four grains with 0.625" cores. + +Burnsim called this a 72% J-493, with about 2.23 sec burn time, and max +pressure on a relatively flat burn of 752.8 psi. + +## Results ## + +Perfect flight, no damage. However, due to firmware issues, the EasyMotor +captured acceleration data but no pressure data. -- 2.30.2